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Effect of compensation to cable networks on the stability of nearby sources
Popelář, Vojtěch ; Hruška, Zdeněk (referee) ; Bátora, Branislav (advisor)
This thesis deals with the infulence of compensation cabel network on the stability of nearby power source. This issue is topical with the increase in the ratio of cable networks 110 kV in large cities. The work examines the theoretical concept of stability and factors that affect it. Mainly discusses the stability angle rotor of a synchronous machina. The practical part is performed in MODES software, that performs dynamic simulation of the behavior of the model. In this case, it will be behavior of synchronous machine during short-circuit in network at different values of compensation of this network.
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Power engineering issues of electrothermal devices
Popelář, Vojtěch ; Radil, Lukáš (referee) ; Lázničková, Ilona (advisor)
Electric furnaces are one of the largest consumers of elektricity. They have a large negative impact on the electricity grid. Therefore, it is necessary to optimize their work process. The thesis deals with energetic problems of high power electric furnaces. The first part provides a theoretical overview of types of electric furnaces, their types, properties and possibility of connecting to the electricity grid. For this work were selected resistance furnaces, induction furnaces and arc furnaces. The second part analyzes the problem of correcting power factor cos and the problem of unbalanced electricity consumption. For both these problems are given the possibilities for removing or reducing the negative characteristics of these phenomena. At the end of this section is an example of compensating equipment design and symmetrizating device design for selected types of electric furnaces.
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Power engineering issues of electrothermal devices
Popelář, Vojtěch ; Radil, Lukáš (referee) ; Lázničková, Ilona (advisor)
Electric furnaces are one of the largest consumers of elektricity. They have a large negative impact on the electricity grid. Therefore, it is necessary to optimize their work process. The thesis deals with energetic problems of high power electric furnaces. The first part provides a theoretical overview of types of electric furnaces, their types, properties and possibility of connecting to the electricity grid. For this work were selected resistance furnaces, induction furnaces and arc furnaces. The second part analyzes the problem of correcting power factor cos and the problem of unbalanced electricity consumption. For both these problems are given the possibilities for removing or reducing the negative characteristics of these phenomena. At the end of this section is an example of compensating equipment design and symmetrizating device design for selected types of electric furnaces.
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Effect of compensation to cable networks on the stability of nearby sources
Popelář, Vojtěch ; Hruška, Zdeněk (referee) ; Bátora, Branislav (advisor)
This thesis deals with the infulence of compensation cabel network on the stability of nearby power source. This issue is topical with the increase in the ratio of cable networks 110 kV in large cities. The work examines the theoretical concept of stability and factors that affect it. Mainly discusses the stability angle rotor of a synchronous machina. The practical part is performed in MODES software, that performs dynamic simulation of the behavior of the model. In this case, it will be behavior of synchronous machine during short-circuit in network at different values of compensation of this network.
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